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Andakatany Deposit, Andakatany, Manandriana, Amoron'i Mania, Madagascari
Regional Level Types
Andakatany DepositDeposit
AndakatanyCommune
ManandrianaDistrict
Amoron'i ManiaRegion
MadagascarCountry

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Name in Malagasy:Andakatany, Kaominin' Andakatany, Distrikan'i Manandriana, Faritra Amoron'i Mania, Madagasikara
Location is approximate, estimate based on other nearby localities.
 
Latitude & Longitude (WGS84): 20° South , 47° East (est.)
Margin of Error:~27km
Locality type:Deposit
Köppen climate type:Cfb : Temperate oceanic climate


This area is famous for its large bastnäsite-(Ce) crystals found in finegrained granitic dykes hosted in bands of orthogneiss intercalated with micaschist along a NW–SE direction. Discovered by the CEA (Commisariat á l'Energie Atomique), Madagascar in the early 1950s. 3 different veins with bastnäsite was then discovered. A large group with bastnäsite crystals weighing 55 kg was found in one of these.
In a chalcedony vein, bastnäsite is associated with fluocerite, cerianite-(Ce) and thorianite (Rasoamalala et al. 2014).

Regions containing this locality

Somali Plate (Somalia Plate)Tectonic Plate
Fianarantsoa Province, MadagascarProvince

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.


Mineral List


13 valid minerals.

Rock Types Recorded

Note: this is a very new system on mindat.org and data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

Bastnäsite-(Ce)
Formula: Ce(CO3)F
Description: A specimen fra Behiers collection marked "Bastnaesite" was shown to be Bastnäsite-(Ce) (Simmons 2003)
Reference: Simmons, W. B. (2003): Investigation of oxide minerals from an old collection of Madagascar minerals. (Contributed Papers in Specimen Mineralogy). Rocks & Minerals, nr 2, 2003
'Biotite'
Reference: Behier, J. (1960): Contribution á la mineralogie de Madagascar. Annales Géologiques de Madagascar XXIX, Tananarive, p 18
Cerianite-(Ce)
Formula: (Ce4+,Th)O2
Colour: mustard-brown to yellowish
Description: alteration film on bastnäsite-(Ce)
Reference: Pavel M. Kartashov data
Covellite
Formula: CuS
Reference: Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871
'Fluocerite'
Reference: Rasoamalala, V., Salvi, S., Béziat, D., Ursule, J.-Ph., Cuney, M., Parseval, Ph. de, Guillaume, D., Moine, B. & Andriamampihantona, J. (2014): Geology of bastnaesite and monazite deposits in the Ambatofinandrahana area, central part of Madagascar: An overview. Journal of African Earth Sciences. 94, 128-140
Galena
Formula: PbS
Reference: Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871
Hematite
Formula: Fe2O3
Reference: Behier, J. (1960): Contribution á la mineralogie de Madagascar. Annales Géologiques de Madagascar XXIX, Tananarive, p 18
Hematite var: Martite
Formula: Fe2O3
Reference: Behier, J. (1960): Contribution á la mineralogie de Madagascar. Annales Géologiques de Madagascar XXIX, Tananarive, p 18
'Lanthanite' ?
Reference: Behier, J. (1960): Contribution á la mineralogie de Madagascar. Annales Géologiques de Madagascar XXIX, Tananarive, p 18
Magnesio-arfvedsonite
Formula: {Na}{Na2}{Mg4Fe3+}(Si8O22)(OH)2
Description: Black needles in marble (cipolin) matrix
Reference: Royal Museum for Central Africa, Belgium collection Sample # 11340
Magnetite
Formula: Fe2+Fe3+2O4
Reference: Behier, J. (1960): Contribution á la mineralogie de Madagascar. Annales Géologiques de Madagascar XXIX, Tananarive, p 18
Monazite-(Ce)
Formula: Ce(PO4)
Reference: Pavel M. Kartashov data
Monazite-(La)
Formula: La(PO4)
Habit: pulverulent
Colour: snow-white
Description: as alteration film on bastnäsite-(Ce) with cerianite-(Ce)
Reference: Pavel M. Kartashov data
'Psilomelane'
Reference: Behier, J. (1960): Contribution á la mineralogie de Madagascar. Annales Géologiques de Madagascar XXIX, Tananarive, p 18
Quartz
Formula: SiO2
Reference: Behier, J. (1960): Contribution á la mineralogie de Madagascar. Annales Géologiques de Madagascar XXIX, Tananarive, p 18
Quartz var: Chalcedony
Formula: SiO2
Reference: Behier, J. (1960): Contribution á la mineralogie de Madagascar. Annales Géologiques de Madagascar XXIX, Tananarive, p 18
Riebeckite
Formula: ◻[Na2][Fe2+3Fe3+2]Si8O22(OH)2
Reference: M. Arligue photo and specimen
Tetrahedrite
Formula: Cu6[Cu4(Fe,Zn)2]Sb4S13
Reference: Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871
Thorianite
Formula: ThO2
Reference: Rasoamalala, V., Salvi, S., Béziat, D., Ursule, J.-Ph., Cuney, M., Parseval, Ph. de, Guillaume, D., Moine, B. & Andriamampihantona, J. (2014): Geology of bastnaesite and monazite deposits in the Ambatofinandrahana area, central part of Madagascar: An overview. Journal of African Earth Sciences. 94, 128-140

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Covellite2.CA.05aCuS
Galena2.CD.10PbS
Tetrahedrite2.GB.05Cu6[Cu4(Fe,Zn)2]Sb4S13
Group 4 - Oxides and Hydroxides
Cerianite-(Ce)4.DL.05(Ce4+,Th)O2
Hematite4.CB.05Fe2O3
var: Martite4.CB.05Fe2O3
Magnetite4.BB.05Fe2+Fe3+2O4
Quartz4.DA.05SiO2
var: Chalcedony4.DA.05SiO2
Thorianite4.DL.05ThO2
Group 5 - Nitrates and Carbonates
Bastnäsite-(Ce)5.BD.20aCe(CO3)F
Group 8 - Phosphates, Arsenates and Vanadates
Monazite-(Ce)8.AD.50Ce(PO4)
Monazite-(La)8.AD.50La(PO4)
Group 9 - Silicates
Magnesio-arfvedsonite9.DE.25{Na}{Na2}{Mg4Fe3+}(Si8O22)(OH)2
Riebeckite9.DE.25◻[Na2][Fe2+3Fe3+2]Si8O22(OH)2
Unclassified Minerals, Rocks, etc.
'Biotite'-
'Fluocerite'-
'Lanthanite' ?-
'Psilomelane'-

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmXp, with m:p = 1:1
Covellite2.8.12.1CuS
Galena2.8.1.1PbS
Group 3 - SULFOSALTS
3 <ø < 4
Tetrahedrite3.3.6.1Cu6[Cu4(Fe,Zn)2]Sb4S13
Group 4 - SIMPLE OXIDES
A2X3
Hematite4.3.1.2Fe2O3
AX2
Cerianite-(Ce)4.4.12.1(Ce4+,Th)O2
Group 5 - OXIDES CONTAINING URANIUM OR THORIUM
AXO2·xH2O
Thorianite5.1.1.2ThO2
Group 7 - MULTIPLE OXIDES
AB2X4
Magnetite7.2.2.3Fe2+Fe3+2O4
Group 16a - ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN
Bastnäsite-(Ce)16a.1.1.1Ce(CO3)F
Group 38 - ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
AXO4
Monazite-(Ce)38.4.3.1Ce(PO4)
Monazite-(La)38.4.3.2La(PO4)
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Mixtures, etc.
'Biotite'-
'Fluocerite'-
Hematite
var: Martite
-Fe2O3
'Lanthanite' ?-
Magnesio-arfvedsonite-{Na}{Na2}{Mg4Fe3+}(Si8O22)(OH)2
'Psilomelane'-
Quartz
var: Chalcedony
-SiO2
Riebeckite-◻[Na2][Fe2+3Fe3+2]Si8O22(OH)2

List of minerals for each chemical element

HHydrogen
H Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
H Magnesio-arfvedsonite{Na}{Na2}{Mg4Fe3+}(Si8O22)(OH)2
CCarbon
C Bastnäsite-(Ce)Ce(CO3)F
OOxygen
O Bastnäsite-(Ce)Ce(CO3)F
O Monazite-(Ce)Ce(PO4)
O Quartz (var: Chalcedony)SiO2
O MagnetiteFe2+Fe23+O4
O Hematite (var: Martite)Fe2O3
O Cerianite-(Ce)(Ce4+,Th)O2
O Monazite-(La)La(PO4)
O Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
O Magnesio-arfvedsonite{Na}{Na2}{Mg4Fe3+}(Si8O22)(OH)2
O ThorianiteThO2
O QuartzSiO2
O HematiteFe2O3
FFluorine
F Bastnäsite-(Ce)Ce(CO3)F
NaSodium
Na Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
Na Magnesio-arfvedsonite{Na}{Na2}{Mg4Fe3+}(Si8O22)(OH)2
MgMagnesium
Mg Magnesio-arfvedsonite{Na}{Na2}{Mg4Fe3+}(Si8O22)(OH)2
SiSilicon
Si Quartz (var: Chalcedony)SiO2
Si Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
Si Magnesio-arfvedsonite{Na}{Na2}{Mg4Fe3+}(Si8O22)(OH)2
Si QuartzSiO2
PPhosphorus
P Monazite-(Ce)Ce(PO4)
P Monazite-(La)La(PO4)
SSulfur
S GalenaPbS
S CovelliteCuS
S TetrahedriteCu6[Cu4(Fe,Zn)2]Sb4S13
FeIron
Fe MagnetiteFe2+Fe23+O4
Fe Hematite (var: Martite)Fe2O3
Fe TetrahedriteCu6[Cu4(Fe,Zn)2]Sb4S13
Fe Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
Fe Magnesio-arfvedsonite{Na}{Na2}{Mg4Fe3+}(Si8O22)(OH)2
Fe HematiteFe2O3
CuCopper
Cu CovelliteCuS
Cu TetrahedriteCu6[Cu4(Fe,Zn)2]Sb4S13
ZnZinc
Zn TetrahedriteCu6[Cu4(Fe,Zn)2]Sb4S13
SbAntimony
Sb TetrahedriteCu6[Cu4(Fe,Zn)2]Sb4S13
LaLanthanum
La Monazite-(La)La(PO4)
CeCerium
Ce Bastnäsite-(Ce)Ce(CO3)F
Ce Monazite-(Ce)Ce(PO4)
Ce Cerianite-(Ce)(Ce4+,Th)O2
PbLead
Pb GalenaPbS
ThThorium
Th Cerianite-(Ce)(Ce4+,Th)O2
Th ThorianiteThO2

Geochronology

Mineralization age: Tonian : ~800 Ma

Important note: This table is based only on rock and mineral ages recorded below and is not necessarily a complete representation of the geochronology, but does give an indication of possible mineralization events relevant to this locality. As more age information is added this table may expand in the future. A break in the table simply indicates a lack of data entered here, not necessarily a break in the geologic sequence. Grey background entries are from different, related, localities.

Geologic TimeRocks, Minerals and Events
Precambrian
 Proterozoic
  Neoproterozoic
   Tonian
ⓘ Orthogneiss~800 Ma

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Behier, J. (1960) Contribution á la mineralogie de Madagascar. Annales Géologiques de Madagascar XXIX, Tananarive, p 18
Behier, J. (1963) Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871
Pezzotta, F. (1999) Madagaskar. Das Paradies der Mineralien und Edelsteine. ExtraLapis nr 17,61 [german version, short notice]
Simmons, W. B. (2003) Investigation of oxide minerals from an old collection of Madagascar minerals. (Contributed Papers in Specimen Mineralogy). Rocks & Minerals, nr 2, 2003.
Rasoamalala, V., Salvi, S., Béziat, D., Ursule, J.-Ph., Cuney, M., Parseval, Ph. de, Guillaume, D., Moine, B. & Andriamampihantona, J. (2014) Geology of bastnaesite and monazite deposits in the Ambatofinandrahana area, central part of Madagascar: An overview. Journal of African Earth Sciences. 94: 128-140


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